Chemtrol Paddle Wheel Safety Flow Switch (PWFS) – Chemical Feed Interlock Sensor

The Chemtrol Paddle Wheel Safety Flow Switch (PWFS) is a critical safety device designed to prevent chemical feed during unsafe or no-flow conditions. Installed inline with the sample stream or return line, the mechanical paddle wheel detects water movement and provides a real-time signal to Chemtrol controllers, ensuring that chemical dosing systems only activate when water is flowing properly.

Compatible with all Chemtrol CH and PC Series controllers, the PWFS integrates seamlessly via its dedicated sensor input. Its rotary paddle design offers reliable mechanical detection, and it’s suitable for use with flow cell assemblies or standalone installations. It includes a quick-connect cable for fast plug-and-play setup.

This flow switch enhances system safety by protecting against overfeeding of chemicals during pump outages, flow interruptions, or maintenance events.

Key Features

• Mechanical paddle wheel design for accurate flow detection

• Automatically interlocks chemical feed based on water movement

• Ensures safe dosing and protects swimmers and equipment

• Compatible with all Chemtrol CH and PC controllers

• Quick-connect plug for easy installation

• Ideal for use with Chemtrol Flow Cell Assembly (FCA)

• Corrosion-resistant materials for long life in chlorinated environments

• Standard sensor for new controller installations and replacements